Tire



Patented July 20, 1926.

MAX cYnUs ovERMAN, or NEW YORK, N. Y.

TIRE.

Applicationdled May 6,

My present invention relates to improvements in tires including the tires of my copending applications Serial Nos. 500,367 and 500,368 filed September 13, 1921, whereby I provide improved mea-ns'for counteracting the tendency to attrition and wear by the working of the basal portions of the tire on one another when the tire is in action.

Other features and advantages of my invention will appear from an understanding l of the following description read in connec tion with the drawings which purport toV show only the preferred embodiment of my improvements although other embodiments are possible within the scope of my invention.

In the drawings.- the figure is a cross-sectional view through my improved tire on a well known form of tire rim. f

The expressions of direction such as upper and lower in the description and claims refer to a. section of the tire in gound contact as shown in the drawings. The expression upright in the description and claims definitive of the inner members; and elbow-shaped definitive of the outer members; and ends definitive of the upper and lower portions of said members; and similar expressions. of course refer tosaid members when looked at vor considered in transverse section as Vin the drawing.

In the illustrated tire within .my inven-y tion. 1-1 are upright load-supporting and shock-absorbing inner members and 2-2 are outer members serving to laterally stabilize or brace the inner members. Thesemembers 1 and 2 are relatively closely adjacent, separated by proper spaces, two'of which 3-3 are similar inV cross-section and the third space being designated 4.

The lower ends of all these members are integrally united by a tread portion 5. The p outer laterally stabilizing members 2-2 are elbow-shaped in cross-section, their lower limbs converging `toward the tread and their upper limbs toward the rim. f

The respective members 1-1 and 2-2 and spaces 3 3 and 4 may be circumferentiallycontinuous around the tire. Also the wholev tire is preferably molded as an entirety. The material is, of course, rubber'or rubber compound or other suitable rubber-like material, with or without fabric reinforcing,- and the like.

The upper portions outer members when on of said inner and the rim lare adapted 1922. Serial No. 559,007.

to be in side by side contact with their free ends 'conta-ined within the flange space of the rim, as shown in the drawing.

The clamping ring 6 as usual clamps the portions 1:L of the inner members to the rim; and the upper portions of said inner members are adapted in turn to clamp the corresponding portions of the outer members against the rim and flanges.

The upper portions of the inner and outer members that are in, side by side contact have complementary interlocking projections and recesses 7-7 -on their contacting sides arranged to resist attrition and wear of said sides due to their sliding against one another inv radial directions when the tire 1s 1n action. The precise form and number of these projections and recesses may vary, two kinds that' are effective for the purpose (which may be` used either separately or combinedly) -being shown at 7 and 7'"%`re spectively on the opposite ysides of the tire in the drawingl i f These interlocking projections may be extended to the entire distance that the upper portions Vof the inner and outer members are in contact both inside and outside the flange space, especially so if lsaid upper portions are not made of firmer and less yielding material than the rest of the tire. Y

On the other hand, if, as in the illustrated tire, the upper portions 2 of the outer members 22 are made of such firm, less yielding material for the purpose described in my aforesaid co-pending applications, thenv I can reduce attrition by using similar mate-` rial in all those portions of the inner members 1-1 that are in Contact therewith; but this reduces the height of fully alive rubber in said inner members and to that extent impairs their shock-absorbing ability. vI

prefer, therefore, to make only the extreme upper ends 1b of said inner members 1-1 that are within the flange space of the afore* said less yielding material as shown in the drawing, so that all the rest of said inner members 1-1 may consist of fully alive rubber. Then, in order to reduce the working and Y attrition between vthe contacting portions of the inner and outer members 1 and 2 outside of the flange space, I prefer to provide the above described interlocking projections and recesses 7 or 7 a or b oth together as shown in the drawing to resist said action. Y Y

It will be noted that the amplitude of `the projections and recesses is reduced as they approach the rim-engaging' portion of the tire. This avoids unduly weakening the upper limbs of the elbow members adjacent the flanges. Also there is relatively less freedom of working of the material of the members l and 2 and in their rim ends, and

`which will, nevertheless, still be within the spirit of the foregoing description and with# in the meaning and spirit of the annexed claims and which as] such are accordingly intended to be covered thereby.

lVhat I olaim'is:

. 1. In a t-ire, the combination vof spaced inner and outer members, a tread portion uniting the lower ends of said members, their upper portions being adapted to be secured in a flanged rim in side by side sur* face contact. the said contact surfaces between said inner and outer members converging. upwardly and extending frombelow the area enclosed by the aforesaidk flanged rim .up into said area; said contact surfaces below said fianged rim area being formed with complementary co-acting projecting. and recessed portions `resist-ing the sliding of said surfaces against one another inradial directions when the tire is in action.

2.1InV ya tire, the combinationv of spaced inner` and outer members, a tread portion uniting the lower ends Iof said members,v

their upper portions being in side by side contact with their free ends adapted to be contained in the iange space of a tire rim, the. uppery portion of the outer members both within and without the flange space together `with the .upperportion of the` inner members within said space being firmer and less yieldingthan otherparts of the tire. and

complementary interlockingv parts on the contacting sides of said inner andr outer members, especially. between the same outf side the ange space, arranged to resist sliding of said sidesagainst one another in radialdireetions .when the tire is in action. .3.111 .a tire, the combination of spaced inner and outer members, a tread portion uniting the lower ends of said members, thelr upper portions being in side by side contact with their free ends adapted1 to be contained in the fiange space of a tire rim, the upper ends of the inner members being adapted to be clamped to the rim and themselves being adapted to clamp the upper ends of the outer members to the rim and its flanges, and complementary interlocking parts on thev contacting sides of said inner and outer members, especially between the same outside the fiange space, arranged to resist sliding of said sides against one another in radial directions when the tire is in action.

4. In a tire, the combination of' spaced inner and outer members. a tread portion uniting the lower ends of said members, their upper portions being in side by side contact with their free ends adapted to be contained in the flange space of a tire rim,

said inner and outer members being spaced apart intermediate their ends, the inner being load-supporting and the outer being laterally-stabilizing, elbowfshaped members' containing the inner between them with their elbows at the sides of the tire and with their limbs converging toward the tread and toward the base of the tire respectively, the upper portion of the outer members both within and without the flange space together with the upper portion of the inner members within said space being firmer and less yielding than other parts of the tire, and complementary interlocking parts on ,the contacting sides of said inner and outer members, especially between the same outside the flange space, arranged to resist sliding of said sides against one another in radial directions when the tire is in action.

5. In a tire, the combination of spaced inner and outer members, a tread portion uniting Vthe lower ends of said members, their upper portions being in side by side contact with their free ends adapted to be contained in the flange space of a tire rim. said inner and outer members being spaced apart intermediate their ends, the inner being load-supporting and the outer being lateially-stabilizing. elbow-shaped members containing the inner between them with their elbows at the sides of the `tire and with their limbs converging toward the tread and toward the base of the tire respectively. the upper ends of the inner members being adapted to be clamped to the rim and themselves being adapted to clamp the upper ends of the outer members to the rim and its flanges, and complementary interlocking parts on the contacting sides of said inner and outer members. especially between the same outside the flange space, arranged to resist sliding of said sides against onekanother in radial directions when the tire is in action.

. 6. In a tire, the combination of spaced inner and outer members, a tread portion uniting the lower ends of said members,

their upper portions being adapted to be secured to a rim in side by side contact, and complementary interlocking parts on the contacting sides of said inner and outer members arranged to resist sliding of said sides against one another in radial directions when the tire is in action, the amplitude of said complementary interlocking parts being reduced as they approach the rim-engaging portion of the tire.

7. In a tire, the combination of spaced inner and outer members, a tread portion uniting the lower ends of said members, their upper ortions being adapted to be secured in a anged rim in side by side surface Contact, the said contact surfaces between said inner and outer members converging upwardly and extending from below the area enclosed by the aforesaid flanged rim up into said area; said contact surfaces below said anged rim area being formed with complementary co-acting projecting and recessed portions resisting slidinfr of said surfaces against one another in radial directions when the tire is in action; and means co-act-ing with the upper portions of said inner members for compressibly securing same .to the rim.

In testimony whereof, I have signed my name to this speciiication this 5th day of May 1922.

s MAX CYRUS OVERMAN. 

